Christella - Thelypteridaceae

Christella parasitica (L.) Lév.






Polypodium parasiticum L.
Cyclosorus parasiticus (L.) Farw.
Thelypteris parasitica (L.) Fosberg
Thelypteris fadenii Fosberg & Sachet

Common name


Rhizome short- to long-creeping; rhizome scales lanceolate in outline, 7 mm long. Fronds monomorphic, 0.5–1 m tall. Stipe up to 50 cm long, softly hairy. Lamina simply pinnate-pinnatifid, 20–50 cm long with about 20 pairs of pinnae, the basal ones deflexed, not or only slightly reduced; pinnae apex tapering to a point, 5–16 x 1–2 cm, deeply lobed; lobes oblong in outline, rounded truncate, ± entire, 6 x 2.5–4 mm; veins in 8–10 pairs, the lowest pair joined forming an excurrent vein to the sinus-membrane, lower surfaces of lobes typically covered with soft spreading hairs and thick orange or very pale ellipsoid glands usually present on the costules and veins. Indusia hairy.




Forest, seasonally inundated bushland, thicket.

Distribution worldwide

Africa, tropical Asia and Pacific, St. Helena.

Distribution in Africa

Dem. Republic of Congo, Uganda.

Growth form



  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 204.
  • Verdcourt, B (2006) Thelypteridaceae.Flora of Tropical East Africa, Pages 11 - 12.